Instruction Manual

IB-106-340C Rev. 4.1 July 2004

Hazardous Area Oxymitter 4000

1-6 PROBE OPTIONS

a. Flame Arrestor Ceramic Diffusion Assembly

The flame arrestor ceramic diffusion as- sembly, Figure 1-9,includes a set of baffles between the cell and the stack gases. This keeps 816°C (1500°F) cell temperatures from igniting unburned fuel in the stack. The ceramic diffusion assembly is also available with a dust seal for use with the abrasive shield assembly.

36220006

36220005

Figure 1-9. Flame Arrestor Ceramic Diffusion

Assembly

Figure 1-10. Flame Arrestor Snubber Diffusion

Assembly

b.Flame Arrestor Snubber Diffusion Assembly

The flame arrestor snubber diffusion as- sembly, Figure 1-10,is satisfactory for most applications. This element is also available with a dust seal for use with an abrasive shield.

c.Abrasive Shield Assembly

The abrasive shield assembly, Figure 1-11,is a stainless-steel tube that surrounds the probe assembly. The shield protects against particle abrasion and condensations, provides a guide for ease of insertion, and acts as a position support, especially for longer probes. The abrasive shield assembly uses a modified diffusor and vee deflector assembly, fitted with dual dust seal packing.

1-10 Description and Specifications

Rosemount Analytical Inc. A Division of Emerson Process Management

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Emerson Process Management OXYMITTER 4000 instruction manual Probe Options, Flame Arrestor Ceramic Diffusion Assembly